Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels

doi:10.1109/TSP.2011.2112649

	Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels
	He, Lanlan 1; Ma, Shaodan 1; Wu, Yik-Chung 1; Zhou, Yiqing 2; Ng, Tung-Sang 1; Poor, H. Vincent 3
	2011-05-01
发表期刊	IEEE TRANSACTIONS ON SIGNAL PROCESSING
ISSN	1053-587X
卷号	59 期号:5 页码:2223-2233
摘要	In this paper, pilot-aided in-phase and quadrature-phase (IQ) imbalance compensation for orthogonal frequency division multiplexing (OFDM) systems operating over doubly selective channels is addressed. Based on a reformulated system model and the least squares (LS) criterion, a joint IQ imbalance and channel estimation method is developed, and the corresponding compensation scheme is also proposed. Moreover, to further enhance the compensation performance, an iterative compensation algorithm is derived via an expectation-maximization (EM) algorithm. Simulation results show that the iterative compensation algorithm initialized by the proposed LS compensation scheme converges in a few iterations and its performance after convergence is close to the ideal case with perfect IQ imbalance and channel state information.
关键词	Channel estimation doubly selective channel (DSC) in-phase and quadrature-phase (IQ) imbalance intercarrier interference (ICI) orthogonal frequency division multiplexing (OFDM)
DOI	10.1109/TSP.2011.2112649
收录类别	SCI
语种	英语
资助项目	Hong Kong Research Grant Council[HKU 7154/08E] ; HKU[200811159094] ; U.S. National Science Foundation[CNS-09-05398]
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000289475800024
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/12939
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	He, Lanlan
作者单位	1.Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Adv Wireless Ctr, Beijing 100864, Peoples R China 3.Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	He, Lanlan,Ma, Shaodan,Wu, Yik-Chung,et al. Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels[J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING,2011,59(5):2223-2233.
APA	He, Lanlan,Ma, Shaodan,Wu, Yik-Chung,Zhou, Yiqing,Ng, Tung-Sang,&Poor, H. Vincent.(2011).Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels.IEEE TRANSACTIONS ON SIGNAL PROCESSING,59(5),2223-2233.
MLA	He, Lanlan,et al."Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels".IEEE TRANSACTIONS ON SIGNAL PROCESSING 59.5(2011):2223-2233.